CasterHQ's ® premium food service & institutional swivel caster Series LD; is madespecifically for customers wanting the advantages of quality over price; this series is made fromheavy gauge cold rolled steel designed and formed for maximum durability, featuring hardeneddouble ball raceways for added strength and extra long service life. The design also features a metaldust cap over the upper raceway of the swivel casters There are a wide range of Threaded Stems available, wheel colors, and brake options to choose from. Popular industries using these castersinclude: Food service & food processing, bakeries, institutions, hospitals, schools, laboratories,retail environments and are also used for material handling carts & trucks, and various other lightmedium duty applications requiring a higher standard in quality and functionality.